Rotary harrow and clod-crusher.



Patented July 25, I899.

2 Sheets$heet I.

mcmN. a, c.

No. 629,428.v

w. m. 000K.

ROTARY HARROW AND CLOD CBUSHER.

(Application filed Apr. 20, 1898.)

(No Model.)

M 3 M m w m; ripimls Pmns cu, PHOTO LI7HO,, WASH No. 629,428. PatentedJuly 25, I899. W. M. 600K.

ROTARY HABROW AND CLOD CRUSHER.

(Application filed Apr. 20, 1898.)

(No Model.) 2 8heets-Sheet 2.

4Z "UNIX 53 Qmdnzomo 3 UNITED STATES PATENT OFFICE.

WILLIAM M.- COOK, on WARREN, OHIO.

ROTARY HARROW AND CLOD-CRUSHER.

SPECIFICATION forming part of Letters Patent No. 629,428, dated July 25,1899.

Application filed April 20, 1898. Serial No. 678,296. (No model.)

f is a specification.

My invention relates to harrows, and has for its object the provisionfor the use of farmers of a single implement in which shall be combinedthe functions of a harrow, a clod-crusher, and a leveler, the improvedconstruction being such that the combined implement can be operated by asingle person and;

team with the same ease and speed of either implement singly, thusgreatly economizing time and power.

With this object in view my invention consists in the improvedconstruction, arrangement,and combination of parts hereinafter f ully'described and afterward specifically pointed out in the appended claim.

In order to enable others skilled in the art to which my invention mostnearly appertains to make and use the same, I will now proceed todescribe its construction and operation, reference being had to theaccompanying drawings, forming part of this specification, in whichFigure l is a perspective View of a rotary harrow and clod-crusherconstructed in accordance with my invention. Fig. 2 is a longitudinalvertical sectional View on the line 2 2 of Fig. 3. Fig. 3 isabottom planview. Fig. 4 is a View inside elevation with the runners adjusted todrag the implement from place to place. Fig. 5 is a side view of one ofthe teeth of the first and third rolls. Fig. 6 is an edge View of thesame. Fig. 7 is a side view of one of the teeth of the second and fourthrolls. Fig. 8 is an edge view of the same.

Like numerals of reference indicate the same parts wherever they occurin the different figures of the drawings.

Referring to the drawings by numerals, 10 indicates the rear and 11 and12 the side pieces of the rectangular frame of my barrow, the frontbeing open and the sides connected by cross-bars 13 and 14, secured ontheir upper edges, the intermediate space between these cross-bars beingoccupiedby a door or trap 15, hinged to the rear cross-bar 13. To

the front cross-bar 14 are seen red the tongue or pole 16 and thesupports Hand 18 of the seat 19.

In order to provide means for hauling the apparatus from place to placewithout the working parts contacting with the ground, I have hinged apair of runners 20 and 21 to the outside of the side pieces 11 and 12 ofthe frame, and to hold these runners in their raised or inoperativepositions hooks 22 at the opposite ends of the seat-frame are adapted tocatch over them, as shown in Fig. 1, while hooks 23 and 24:, projectingfrom the sides of the frame, serve to hold them in the lowered oroperative position, in which they support the frame high enough to raisethe teeth clear of the earth, such operative position being illustratedin Figs. 3 and 4. The runners are constructed of angle-iron and areprovided with suitable braces 25. A board 26, slightly inclined backwardfrom the perpendicular, extends from the one side piece to-the other,its upper edge being againstthe underside of cross-bar 13 and its loweredge even with the bottom of the side pieces 11 and 12.

. 27, 28, 29, and 30 indicate four cylinders or rollers trunnioned inbearings formed partially. in the sidepieces 11 and 12 of the frame andpartially in bearing-strips 31, secured upon the bottom of said. stripsby means of bolts 32. The cylinders 28 and 30 are provided with teeth35, projecting radially therefrom, of the shape illustrated in Figs. 7and 8, they being also secured in the cylinder by inserting their stems36 in like radial recesses. The teeth on each of these cylindersalternate with and overlap the teeth of the adjacent cylinders, and theteeth of cylinder 30 overlap and alternate with pins or teeth 37,projecting forward from the cross-beam 38, whose upper surface isinclined forward from the under side of the board 26,so that any dirtwhich may be thrown upward by the teeth 35 of cylinder 30 will slide oifthis inclined surface and not be lodged within the apparatus. The teeth33 of the cylinders 27 and 29 are somewhat broader than the teeth 35 ofthe cylinders 28 and 30, being substan tially of the shape of ashield,their upper inward-curved ends fitting against the peripheries of thecylinders and their front and rear edges and bottom being beveled off,the bot- 3O shown in Figs. 1 and 2, and the hooks 22 enessary to use it.

tom-ending in a sharp point, as at 39. The

teeth consist of a main bodysomewhat flattened and slightly wider thanthe stem 30, provided with forward and rear projections and 41, beveled01f to the front and rear and finished to an edge at the bottom, theupper projections 40 being curved on their upper faces to fit theperipheries of the cylinders and thelower projections, together with themain body of the tooth, being sharpened to a chisel edge at the extremelower edge. Gross-beams 42,shaped in section like a ninety-degreesegment of a circle, are se cured upon the bottom of the sides 11 and 12in the rear of the toothed cylinders, with their curved sides forwardand downward, as clearly shown.

The construction of my invention will be readily understood from theforegoing description, and its operation may be described as follows:With the parts in the positions shown in Figs. 3 and 4E ateammaybehitched to the pole or tongue in the usual manner and the apparatusor implement dragged on the runners 20 and 21, as a sled, to any part ofthe field or farm on which it may be nee- Havihg arrived at the field itis desired to operate on, the hooks 23 and 24 are disengaged from therunners 20 and 21, the runners reversed in position or raised, as

gaged over them to prevent their falling. The team is now started, withthe teeth of t the cylinders and the cross-bars 42 in contact with theearth. The teeth of the cylinders of the lumps being crushedbyth'epassage of the cross-bars 42 over them, said cross-bars serving tosmooth the ground passed over. It will thus be seen that by passing myimproved harrow and clod crusher over the ground at once the clods andlumps therein will be thoroughly pulverized and the ground smoothed,thereby dispensing with the use of more thanone implement for thispurpose, as is very often necessary.

WVhile I have illustrated and described what I now consider efficientmeans for carrying out my invention, I do not wish to be understoodaslirniting myself to the exact details of construction shown anddescribed, but hold that such slight changes or variations as mightsuggestthemselves to the ordinary mechanic would properly fall withinthelimit and scope of my invention.

Havingthus fully described my invention, what I claim'as new, anddesireto secure by Letters Patent of the United States, is-

The combination with the frame of the harrow, of the cylinders 27, 28,29 and 30 mounted in hearings between the frame and the bear-' ing-strip31, the cylinders 27 and 29 being provided with shield shaped teeth 33,and the cylinders 28 and 30 with the teeth'35, having the beveled-offupper and lower front and rear projections 40'and etl, the latter andthe body of the tooth being formed with a chisel edge at thebottom,substantially as described.

WILLIAM M. COOK.

Witnesses:

ARTHUR HATELEY, JOHN FROMENT.

